== Letter from the site owner giving permission to place IEEE milestone plaque on the property<br> ==

== Letter from the site owner giving permission to place IEEE milestone plaque on the property<br> ==

Revision as of 15:41, 19 April 2012

International Standardization of G3 Facsimile, 1980

This site commemorates the creation of the Modified READ two-dimensional coding for G3 facsimile developed through the careful collaboration of NTT and KDDI. Strong Japanese leadership with intense international discussion, testing, and cooperation produced the International Telecommunications Union G3 recommendation in 1980. This innovative and efficient standard enabled the worldwide commercial success of facsimile.

The plaque can be viewed at the NTT Cyber Communications Laboratory Group, Yokosuka City, Kanagawa, Japan.

The birth of facsimile

The origin of the facsimile extends far back and its founding can be ascribed to the radical principle advanced by Alexander Bain in 1843. Thus it preceded by 30 years or more the invention of the telephone by Alexander Graham Bell in 1876. The growing reach of the telephone network sparked rapid technical advances in many fields except for the facsimile, which continued to be the 'sleeping giant' for many years.

Age before the G2 facsimile

At first, only a few companies could afford facsimiles and each company bought paired sets to communicate with themselves; there was little demand for the cross-company connection of facsimiles. The early international standard on facsimiles, Group 1(G1), was issued in 1968 [1]. However, there was little communication based on this standard. Released in 1976 [2], the G2 facsimile (the so-called "three minute facsimile") was the breakthrough needed to stimulate the interconnection of facsimiles. The larger market sparked by the standard lead to a proliferation in the models available and a steady fall in price. More people were sending facsimile messages and they hated waiting for each page to send. More advanced standards became the goal of international and domestic research activities.In CCITT (International Consultative Committee for Telegraph and Telephone), international standards for securing facsimile intercommunication had been under discussion for some time. In Japan, the driving force was The Ministry of Posts and Telecommunications (Now: Ministry of Public Management, Home Affairs, Posts and Telecommunications). The G2 facsimile [Recommendation T.3 (standardization of G2 facsimile for the document transmission)] represented the speed-enhanced analog facsimile. In 1972, the telephone facsimile service attracted attention as an office communications tool for corporate customers. Its spread advanced around new types of business communication in which drawings and images such as the architect's plans and proposals were transferred between parties.Both G1 and G2 facsimiles were dropped as recommendations in 1996 with the rapid adoption of the digital G3 facsimile standard.

Age of G3 facsimile international standardization and MR (Modified READ) method

G3 facsimile realized the one minute facsimile by adopting the MR method, the most advanced two dimensional encoding method developed through the collaboration of NTT and KDDI. It enabled the intercommunication of all facsimiles throughout the world.The rapid standardization precluded the market from being flooded with proprietary systems, while ensuring the freedom needed to compete with additional features and reduced cost. The rapid penetration of G3 facsimile proved these achievements.

The G3 facsimile (the "one minute facsimile") was recommended as 'Redundancy suppressive digital facsimile' in 1980[3]. At this time, Japan took the lead, and two-dimensional coding was examined by CCITT as the basic facsimile redundancy reduction method. Joint proposals were made by KDD (Kokusai Denshin Denwa Co., Ltd., present KDDI) and Nippon Telegraph and Telephone Public Corporation (now Nippon Telegraph and Telephone Corporation = NTT) [5]-[7]. Of particular import was the release of digital facsimile equipment that used the MR method, which offered twice the compression performance of the standard coding method (MH coding) at that time. However, the biggest issue was the related intellectual rights, but this was resolved when the Japanese delegates declared at the Kyoto meeting of CCITT that if the MR method was adopted as the international standard, the patents and property rights would be offered free of charge. Most pending issues were completely settled by the remark from this Japanese delegates, and the Kyoto meeting of CCITT finished smoothly as a result. Reaching agreement on this recommendation was a strongly held goal of Japan.

The two-dimensional coding MR (Modified READ) method was adopted as the basis for an international standard (ITU-T recommendation T.4) in 1980 [3]. Typical G3 facsimile equipment of that time is shown in Fig. 1. In addition, the part of the CCITT recommendation that describes Modified READ is shown in Fig. 2 [3]. The rapid standardization precluded the market from being flooded with proprietary systems, while ensuring the freedom needed to compete on additional features and reduced cost. The rapid penetration of G3 facsimile validated these achievements [8]-[10].In 1981, NTT began the Facsimile Communications Network (F-Net) Service, making facsimile an essential service for business [11]-[19].

Beyond the G3 facsimile

The MR method was extended to yield the MMR method; it was adopted as ITU-T recommendation T.6 in 1984 and is the coding method of the current G4 facsimile [4]. This recommendation was issued for 'For telematique equipment and ISDN (Integrated Service Digital Network)'. The MMR method is still being used to realize high-speed facsimile communication.

The opening of the communication infrastructure by the law change in Japan and timely international standardization activities played major roles in the rapid spread of the facsimile in Japan. The performance gains and price cuts offered were further advanced by this spread, and worldwide adoption followed soon after. Standards were revised to allow personal computers to send and receive facsimiles [20].